Use link instead of RequestDispatcher to forward session objects

I have objects that I pass from a Servlet to JSP using RequestDispatcher type. Now, I was wondering if I can do the same with a link but not sure how I do that:
Servlet called MyServlet.java (or MyServlet in web.xml mapping):
String firstname = request.getParameter("firstname");
String lastname = request.getParameter("lastname");
String city= request.getParameter("city");
String state= request.getParameter("state");
HttpSession session = request.getSession();
session.setAttribute("firstname", firstname);
session.setAttribute("lastname", lastname);
session.setAttribute("city", city);
session.setAttribute("state", state);
RequestDispatcher dispatcher = getServletContex ().getRequestDispatcher("start.jsp");
dispatcher.forward(request, response);
...The above servlet automatically goes to the JSP and shows the firstname,lastname, city and state values that were submitted from a form. What is the equivalent of the RequestDispatcher where I can put a link instead so the user can click on the link and that will take them to the JSP with the session values:
This is not working because takes to a null error page:
response.setContentType("text/html");
    PrintWriter out = response.getWriter();
    out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 " +
                                        "Transitional//EN\">\n" +
                "<HTML>\n" +
                "<HEAD><TITLE>Hello WWW</TITLE></HEAD>\n" +
                "<BODY>\n" +
                "<p><a href="MyServlet">Link to JSP</a></p>\n" +
                "</BODY></HTML>");
.....Please advise.

Not quite sure I understood what you're trying to do...do you want that when the user clicks on a link, he/ she should be taken to your JSP via MyServlet?
If so, then your link simply needs to point to the URL that MyServlet is mapped to.
For example, if your web.xml has the entry:
<servlet-mapping>
<servlet-name>MyServlet<servlet-name>
<url-pattern>/MyServlet</url-pattern>
</servlet-mapping>...then your servlet can be accessed at http://[servername]/[context]/MyServlet. So your link needs to point to this, just like it would for other resources like JSPs or HTML pages.
So the line should be:
<a href="/MyServlet">Link to JSP</a> //the exact href value will depend on where you are in your web-app directory structure and how you want to link to your servletAlso, note that you're breaking the String with unescaped quotes.

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marry christmas
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Message was edited by:
rachna_arora82

hi rachna,
JSP has a default(implicit) session object...... use the getSession(true) method on the session object and then going u can either get or set attributes depending on the requirement
That was in general and now with the issue u have got..... what u can do is that the u can create session for every user who logs in and when he/she tries to login again then u can probably check for the existing session object in the JSP and perform the logic as required..... any clarifications plzzzzzzz let me know
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Message was edited by:
Novice_inJAVA
Message was edited by:
Novice_inJAVA

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12625
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12300
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12625
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